How to find the distance between regions?

5 次查看（过去 30 天）

bob 2012-7-6

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/42957-how-to-find-the-distance-between-regions

Hey,

I have a BW image in which there are some regions with irregular shapes. I'd like to calculate the following information for each particle;

1- the minimum distance to other particles.

2-maximum distance to the neighboring particles

3- Average value of distance from this particles edges to the neighboring particles.

I was thinking to put a circle at the centroid of the region and then grow the radius of the circle to touch the first particle. this would be the the minimum distance. and continue again to touch the other particles and finally calculate the average value.

any ideas?

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Image Analyst 2012-7-6

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/42957-how-to-find-the-distance-between-regions#answer_52782

Have you looked at bwdist()?

13 个评论
显示 11更早的评论隐藏 11更早的评论

bob 2012-7-24

Good, thanks. That's it;

http://tinypic.com/view.php?pic=qpgj8l&s=6

Image Analyst 2012-7-24

If you're looking at the closest distance of a particle's edge to any other possible edge pixel of any other particle, then bwdist can't do that. You'd have to use bwboundaries and do a brute force approach. It's not many coordinates though, so it should be pretty fast. Let's see your code for that and we can discuss it.

请先登录，再进行评论。